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Palcam Agar Base

Pack Size: 500g

Price: £112.95

Stock Availability:

Quantity:

Stock Availability

On Shelf - Approx. UK delivery date: Wednesday the 14th May 2025*

In bulk stock - ships within 4 - 8 Days (Excluding weekends and public holidays)

4 - 6 Weeks Approx.

UK Shipping

We can only ship to Northern Ireland where a Royal Mail postal option has been chosen at checkout.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible

Applications

Selective differential medium for the isolation of Listeria monocytogenes from food, clinical and environmental specimens

General

Palcam agar is a selective differential medium for the isolation of Listeria monocytogenes from food, clinical and environmental specimens.The Columbia peptone mix and starch provide the required carbon, nitrogen and vitamins.

Glucose is a fermentable carbohydrate. Differentiation of Listeria spp. from enterococci and staphylococci occurs through aesculin hydrolysis and mannitol fermentation. Listeria monocytogenes will hydrolyse aesculin and the associated reaction with the ferric ammonium citrate gives rise to a brown/black precipitate around the colonies.

Listeria spp. do not however ferment mannitol. Mannitol fermentation is seen through a colour change of the colony or the area around the colony from red to yellow due to the production of acidic end products.

Phenol red is the pH indicator in the medium. Lithium chloride is included to inhibit enterococci. The associated Palcam selective supplement, LS0038, contains polymyxin B, acriflavine and ceftazidime to inhibit other Gram-positive and Gram-negative organisms that may be present in specimens.

Specification

Shelf Life (days): 1095 days
Storage Temp (°C): 10-30°C
Dehydrated Medium Appearance: Fine Powder
Prepared Medium Appearance: Firm Gel
Dehydrated Medium Colour: Beige
Prepared Medium Colour: Red
Dehydrated PH: 7.2 ± 0.2
Prepared PH: 7.2 ± 0.2
Recommended Incubation: Aerobically at 37°C for 48 hours
Formula g/L
Columbia Peptone Mix: 23.0
Sodium Chloride: 5.0
Corn Starch: 1.0
Glucose: 0.5
Mannitol: 10.0
Aesculin: 0.8
Lithium Chloride: 15.0
Ferric ammonium citrate: 0.5
Phenol Red: 0.08
Agar: 12.0
Total: 68.0

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